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<p>[QUOTE=&quot;-jeffB, post: 1106105, member: 27832&quot;]A grey card is exactly what the name implies -- a card that&#039;s printed with a uniform grey color. On better cameras, you can take a picture of a grey card and use it as a white-balance reference. On any camera, once you&#039;ve taken a picture with a known grey somewhere in the image, you can use image-processing software to adjust the image.</p><p><br /></p><p>The tricky part for capturing toning, in my (very limited) experience, is that toning only shows up at its best when there&#039;s a very small angle between the camera (or your eye) and the light source. It&#039;s hard to arrange things this way, because the camera blocks the light! And, as Mike said, if the coin is encapsulated, you&#039;ll get glare.[/QUOTE]</p><p><br /></p>

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